Variable-time-operating oil-controlled valve.



J. F. WARE.

VARIABLE TIME OPERATING OIL CONTROLLED VALVE.

APPLICATION FILED MAR. 29.1909.

Patented June 14,1910.

UNITED STATES PATENT OFFICE.

JAMES F. WARE, OF DENVER, COLORADO, ASSIGNOR OF ONE-HALF T0 ARNOLD A.BOWHAY, OF DENVER, COLORADO.

VARIABLE-TIME-OPERATING OIL-CONTROLLED VALVE.

T 0 all whom it may concern:

Be it known that I, JAMES F. IVARE, a citizen of the United States ofAmerica, residing in the city and county of Denver and State ofColorado, have invented a new and useful Variable-Time-Operating Oil-Controlled Valve, of which the following is a specification.

My invention relates to improvements in oil controlled valves, and theobject of my invention is to provide a variable time-controlling oiloperating valve, that can be set to move through its operative movementin different predetermined periods of time, and that having been set tooperate in any desired period of time within its capacity, will operatesuccessively within that time. I attain these objects by the mechanismillustrated in the accompanying drawings, in which:

Figure 1, is a side elevation of the improved valve showing one way inwhich the same may be arranged to effect a mechanical operation. Fig. 2,is a vertical, longitudinal sectional view through the same. Fig. 3, isa horizontal, sectional view thereof on the line 33 of Fig. 2. Fig. 4.,is a side elevation of the outlet valve tube. Fig. 5, is a similar viewof the cut-off which is mounted in the valve tube. And Fig. 6, is a planview of the index plate and of the pointer which is attached to theupper end of the rod secured to the cut-off.

Similar characters of reference refer to similar parts throughout theseveral views.

Referring to the drawings, the numeral 1, designates a cylindricalcasing, to the bottom of which a base flange 2 is connected, which alsoforms the lower end and is provided with screw receiving apertures 3. Acylinder head at is also secured to the top of the cylinder, preferablyby being screwed thereto. This cylinder head is provided with a stufiingbox 5, in which a gland 6, is threaded. The chamber 7 of the stuffingbox is filled with suitable packing material. The cylindrical casing isprovided with a cylindrical bore 8, which extends through it from end toend. A piston head 9 is reciprocally mounted in the bore of thecylindrical casing, which is provided with a piston rod 10, that extendsthrough the stuffing box and gland of the upper cylinder head. Thepiston head is provided with piston rings 11, to insure its fittingsnugly Specification of Letters Patent.

Application filed March 29, 1909.

Patented June 14, 1910. Serial No. 486,602.

in its bore. The cylinder and its piston head stand in a verticalposition, and through the piston head from top to bottom I form an oilpassage 12. I preferably make this aperture of tapering form, and taperit smaller from the top of the piston to the lower end of the piston,and at the lower end of the piston I form a valve seat lug portion 13,around the aperture passage 12, and against this valve seat 13 I place avalve, which comprises a disk portion 14 and a valve stem portion 16.stem 16 projects slidably through a sleeve 17, that forms a part of oneend 18 of a bracket 19, the other end of which is secured to the bottomof the piston head. The sleeve l'Textends to within a short distancefrom the disk portion 14 of the valve, and a coiled spring 20 is placedaround the sleeve and bears with an expansive resilient pressure betweenthe bracketand the disk of the valve, and holds the disk portion of thevalve against its seat portion 13.

At the side of the main cylinder, I form a valve chest cylinder 21,which is connected to the main cylinder at its opposite ends. This valvechest cylinder is provided with a valve cylinder bore 22, which extendsthrough it from end to end, and connects by an upper port 23 and a lowerport 24 with the bore of the main cylinder. A tube 25, which I term theoutlet valve, is secured to the top of the valve chest casing, andextends down into the bore of the casing, a short distance beyond theupper port 23 of the valve casing. This tube is preferably sweated orotherwise secured to the upper end of the cylinder, and preferablyextends a short distance above it. This outlet valve is provided with avalve port 25", which comprises a V-shaped slot that is formed in theside of the tube facing the upper port 23 of the valve casing. ThisV-shaped valve port extends preferably about one-fourth of the wayaround the circumference of the tube. Within this tubular outlet valve Ifit rotatably a plug 26, which I term a cut-off valve. This plug isprovided with a shoulder 27 which rests on top of the top end of theoutlet tube, and in its lower end it is provided with an aperture 28,which extends up into the plug above the port 25, and through the shellof the tube an aperture 29 is formed, which I term the cut-off port.This cut-off port registers opposite to the V- The valve shaped port25*, in the outlet tube, and when this tube is turned in the outlet tubethis port 29 cuts off the area of the outlet port 25 or closes italtogether.

An aperture 29 is formed in the top end of this cut-off, and a valvestem 30 is secured therein, preferably by a set screw 31. The reciprocalmovement of the piston head is limited to a stroke that starts from thecenter of its upper port 23, to the center of its lower port 24, and itsmovement to these points is defined by a pin 32, which is secured to thetop of the piston head, which strikes the top cylinder head and preventsthe piston being raised above the central part of the upper port :23,and a pin 33, which is secured to the base flange and bottom cylinderhead, and which extends up to the central part of the lower port 24.This lower pin 33 is placed preferably in the center of the cylinder,and the piston head on its downward stroke moves against and rests onit, the bracket that supports the pistons oil passage valve being placedat one side of the center of the bottom of the piston. At the top of thecylinder I form an atmospheric vent aperture, which I preferably placein the casing of the port 23, and preferably connect to this aperture apipe 3%, which is extended a short distance above the cylinder casing.The top of the piston rod is provided with a lever or latch engaging arm35, which is arranged to engage a lever or latch or arm 35 that isoperatively connected to any machine to which the valve is applied, tosecure a successive and predetermined number of variable time operativemovements. This feature of my invention is controlled by a graduateddial plate 36, and a pointer finger 37, the pointer finger being securedto the top of the valve stem and the graduated plate being secured tothe machine the valve is to operate, just below the pointer finger, andbeing graduated to any desired range of time for photographic printingwork, from one second to fifteen seconds, but the valve and the oilpassage in the piston head can be arranged to make the time vary fromabout one to several minutes, which would be the range of time necessaryin some machines the valve could be applied to, such for instance as eggboiling machines.

The operation of my improved variable time operating valve is asfollows: The cylinder and its valve chest bores are filled with oil,preferably a good quality of engine oil being used, and the piston israised to the top of its stroke and held by a suitable latch 38. Thepointer is attached to the valve stem in a position relative to thecutoff valve so that when the pointer is at the first line of the index,the cut-off valve 29 is wide open to the outlet valve 25 consequentlythe pointer is turned to the graduated line of the index that will setthe cutofi valve to a point where the piston will make its stroke in thetime desired. I illustrate the pointer set at the tenth line of theindex, which for example we will suppose stands for ten seconds, andthis position of the pointer turns the cut-off valve to partially closethe area of the outlet valve 25, which is so proportioned in arearelative to the outlet valve port and the volume of oil in the cylinderand valve bores to allow sufficient oil to pass through it to permit thepiston to be ten seconds in falling from the top of its stroke to andagainst the pin at the bottom of its stroke, and the instant the pistonis raised and locked at the top of its stroke by the movement of themech anism,it is then released,and the piston starts to move downward byits weight as the oil flows from below the piston through the lower port:24 and through the cut-off port 29 and outlet port 25" into and throughthe upper port 23 into the main cylinder on top of the piston, and thepiston falls the full length of its stroke in ten seconds, and at theend of this operative time movementthe oil displaced below the pistonhas flowed through the outlet valve to the top of the piston. Then whenthe piston is again raised, the oil flows down through the oil passagein the piston through its port 12 to below it.

My oil valve can be adapted to operate machines of diiferent characters,and is particularly adapted for photographic printing machines.

Having described my invention, what I claim as new and desire to secureby Letters Patent, is:

1. In a variable time controlling oil operating valve, a verticalcylinder provided with a vertical valve chest, oil ports extending fromsaid cylinder into said valve chest, a reciprocating piston in saidcylinder provided with an oil passage through it to the opposite ends ofsaid cylinder, a springcontrolled movable valve at the lower end of saidpistons oil passage arranged and adapted to control the flow of oil fromthe opposite ends of said cylinder through said piston and through saidvalve chest and back into said cylinder, a rotary movement variablecut-out valve arranged to control the oil ports between said cylinderand valve chest, a valve stem on said valve, a pointer on said valvestem, an index in the path of said pointer for determining the amount ofmovement to be given said valve, a vent pipe in the oil passage at thetop of said cylinder and valve, a piston rod connected to said piston,and means connected with said piston rod for raising and securing andreleasing said piston.

2. In a variable time controlling oil operating valve, the combinationof the vertical cylinder and valve chest, provided with ports connectingthe opposite ends of said cylinder and valve chest, a piston head androd reciprocally mounted in said cylinder, means including a projectionat the bottom of said cylinder in the path of said piston for limitingthe reciprocal movement of the piston between said ports, with a fixedtube within said valve chest, closing the passage to the upper port ofsaid cylinder, a V- shaped port through the shell of said tuberegistering with the upper port between the upper ends of said cylinderand valve chest, a rotating valve within said fixed tube comprising astem provided with an open-ended oil entering recess registering withthe valve chest and provided with a port registering with the V-shapedport in said fixed tube, a valve stem secured to said valve, a pointeron said valve stem registering with said rotary valves port, a graduatedindex plate within the operative movement of said pointer, and meansconnected with said piston rod for raising and securing and for manuallyreleasing said piston, and an atmospheric air vent pipe extending abovesaid cylinder and connected with the passage between said cylinder andvalve chest at the top port of said cylinder.

3. In a valve as specified, a vertically disposed main cylinder, abranch cylinder communicating with the main cylinder at its upper andlower ends, said cylinders being filled with a suitable liquid; a pistonin the main cylinder, having a port extending through the same; a valveover the lower end of said port; a tube in the upper end of the branchcylinder having a port communieating with the main cylinder; a cut-offin said tube, having a port adapted to register with the port in saidtube; a stem extending from the cut-off; a rod connected with the pistonand extending through and beyond the upper end of the main cylinder; andmeans for limiting the movement of the piston in either direction.

l. In a variable time-controlling oil-operating valve, a verticalcylinder provided with a vertical valve-chest, oil ports extending fromsaid cylinder into said valve-chest, a reciprocating piston in saidcylinder provided with an oil passage through it to the opposite ends ofsaid cylinder, a movable valve at the lower end of said pistons oilpassage arranged and adapted to control the flow of oil from theopposite ends of said cylinder through said piston and through saidvalve-chest and back into said cylinder, a rotary movement variablecut-out valve arranged to control the oil ports between said cylinderand valve-chest, a valve stem on said valve, mechanism for indicatingthe position of the valve, a piston rod connected to said piston, andmeans connected with said piston rod for raising and securing andreleasing said piston.

5. In a variable time-controlling oil-operating valve, the combinationof the vertical cylinder and valve-chest, provided with ports connectingthe opposite ends of said cylinder and valve-chest, a piston head androd reciprocally mounted in said cylinder, means for limiting thereciprocal movement of the piston between said ports, with a fixed tubewithin said valve-chest, closing the passage to the upper port of saidcylinder, a V- shaped port through the shell of said tube registeringwith the upper port between the upper ends of said cylinder andvalve-chest, a rotating valve within said fixed tube comprising a stemprovided with an open-ended oil entering recess registering with thevalve chest and provided with a port registering with the V-shaped portin said fixed tube, a valve stem secured to said valve, mechanism forindicating the position of the valve, and means connected with saidpiston rod for raising and securing and for manually releasing saidpiston.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES F. WARE.

Witnesses:

G. SARGENT ELLIOTT, ADELLA M. FOWLE.

